Seiko Cal. 7183 - 640

The Seiko 7183-640 represents an important milestone in Seiko's 1985 lineup. With its 21mm lug width and 13.1mm profile, it sits comfortably on most wrists. [seikata-wm-d108e42d0006]

Also known as: Bullhead, Navigator

Specifications

Movement

Solar

Case Material

Titanium

Case Width

34mm

Case Thickness

13.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

180m

Dial Color

Champagne

Jewels

21j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1985

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